Apparatus for relining motor-vehicle brake bands



April 2 1, 1925. 1,534,083

R. SARDESO N APPARATUS FOR RELINING MOTOR VEHICLE BRAKE BANDS OriginalFiled Nov. 25, 192; 2 Sheets-Sheet 1 April 21, 1925. 1,534,083

R. SARDESON APPARATUS FOR RELINING MOTOR VEHICLE BRAKE BANDS OriginalFiled Nov. 25. 1921 2 Sheets-Sheet 2 Fz' .9 I

y [721 672 {or Poamrfieoarav ATTQQNEYS Patented Apr. 21, 1925,

\ UNITED!STATES! ATENT oFFicEz;

ROBERT SARDESON, O33 MINNEAPOLIS, MINEESOTA.

APPARATUS FOR RELINIIIG MOTOR-VEHICLE BRAKE BANDS.

To all whom it may concern:

Be it known that I, ROBERT Snnnnsoma citizen of the United States,residing Minneapolis, county of Hennepin, in the State of Minnesota,have invented certain new and useful Improvements 1n Apparatus forRelining Motor-Vehicle Brake Bands, of which the following is a specification.

This inventionv relates to new and useful improvements in anapparatusforrelining motor vehicle brakebands. The present method of reliningbrake-bands'is laborious and tedious and involves a relatively highlaborcharge. In such irelining operation as at present effected, therear axle ofthe car is jacked up and the rear wheels are re' moved atwhich time the brake drums (fixed to the rear wheels) are also removed.The entire brake mechanism is thus exposed. The actuating levers mustnext be loosened and disconnected and the brake-bands re moved.-'Usually these are caked with mud upon, removal ofthelining. the holes inthe band are" cleared by a punchv Thenew line ing is then fittedandclamped to the band.

and the bandisused as a templatefordrilling holes. New rivets are theninserted in the alined band and lining holes and ham+ merediagains'tnani anvil ,or-n1etal surface whereby therivet endsareflattened. The same method applies for both internal expandingvbandssuch as are employed in practically all cars for emergency brakes andfor. external contracting bands employed for a service. brake.

After reli-ning of the bandis efiec'tech'the brake-bandmust be replacedand thereafter thebrake mechanism must be reconnected and adjusted andthereafter the rear wheels and brake drums are "replaced. The presentprocess consumes: a large amount ofthe mechanicsv time and involves arelatively large charge therefor.

By the employmentof-this novel apparatus, the labor charge ispractically cut in which has matured into Patent No,"- led August 24,1922. Serial No.'

half. Inpraoticing this invention in the majority of cases, the rearwheels] and brakedrnmsare removed, the old liningcut away from thebrake-band without removahofj such band from its mounting. Ananvil isthen inserted, for example, between the service brake-band and the linedemergency brake-band the new lining is then inserted between the servicebrake-band and the an viland is riveted to the service brakeband. T heanvil is then removed and the wheelsand brake drum replacedw The objecttherefore of this invention=is to 'n'ovide a new and improved; apparatusfor relining motor vehicle brake-bands} Other objects of theinvention-will mo re fully appear from the followingdesorips tion andtheaccompanying drawings--and will be pointed out in the annexed claims.

in the accompanying drawingsthere has been disclosed a structuredesigned to carry out the objects of the invention, but it isto beunderstood that the invention is-not confined to the exact featuresshown, as'various changes may be made within-the scope of the claimswhich follow.

In the drawings:

Figure 1 is a View in side elevation ot a form of ring or anvil;

Figure 2 is a vertical section shown in Figure 1;-

Figure 3 is a view in' sideelevation 013a pin employed tofacilitatehandling of-the ring or anvil;

Figure 4 is a view in side elevationof a common form of internal and;external 90 brake mechanism' after removal of a rear wheel and drum,the-novel ring or anvil being here shown in sectionand infopefra tiveposition;

Figure 5 is a view in vertical section of- 96 the assembled mechanismbut with-the es sociated parts shown in Figure 4 omitted;

F igure 6 is an enlarged detail of a portion of the sectional view shownin-Figure H l.

Figure 7 is a view in side elevationofa form of adjustable anvil; y I

Figure 8 is a view iii-vertical seotion on; the line 88 of Figure 7; and

Figure 9 is a .perspective-view'ofa modi-- 105 fiedformof anvil.

For the purpose of clearness and definites ness in explaining thisinvention thereis of Y the ring shown in the accomapnying drawings acommon form of brake mechanism, it being preferably shown after removalof a rear wheel and its brake drum in any of the well-known, manners.The annular plate 11 is fixed to the rear axle housing as is usual andis stationary with respect thereto. Theaxle 12 for a rear wheel projectsthere through in accordance with standard practice. The mounting of theemergency internal expanding brake-band 13 and its.

connection 14; with an emergency brake rod (not shown) is old so far asthe inventor hereof is concerned and is hereby expressly disclaimed.Such brake-band 13 is provided as is common with a lining 15 adapted tobe frictionally held against the internal face of the usual brake-drum(not necessary to be shown). Likewise, it is old in this art to providea service external contracting brake-band 16 having a lining suitablymounted and having a connection 18 with the usual service or foot brakerod 19.

The novel anvil employed consists of a fiat ring 21 preferably ofsubstantially rigid metal. This ring is of an effective diameter equalto that of the brake-drum of the rear wheel with which the brakebands inquestion are associated and is preferably greater in width than thewidth of the brake-band with which it is adapted to be used. When theclosed fiat ring 21 is employed, there are provided a plurality or setof such rings of varying diameters to be selectively used in connectionwith differently sized brake mechanisms of the present various makes ofmotor vehicles. The portion 22 (see Figure 5) of the ring which may betermed the projecting portion is preferably provided with av pluralityof holes 23 therethrough, such holes being disposed adjacent theprojecting side of the ring. Such holes 23 are adapted to receive thepin 24 by means of which the ring may be conveniently manipulated.

This novel apparatus is equally applicable to relining either theexternal brakeband or the internal brake-band. It will he described andexplained in connection with the relining of the external brakeband. Inthe employment of this novel apparatus, the rear wheel and attachedbrake drum are removed in the usual manner. But the present demountingof the brakeband connections is not carried out. Instead, after removalof the wheel and brake drum, the old rivets which secure the old liningto the brake-band are cut away, as for example, by means of a chisel andhammer and the old lining is then easily removed from the externalbrake-band. The ring is then inserted between the lining 15 of theinternal brake-band 13 and the external brake-band 16 and the pin 24:may, if desired,be inserted in one of two holes 23 of the ring 21 tofacilitate handling of the anvil. The new lining, which has beenpreviously cut to proper length, is then inserted between the externalbrake-band 16 and the ring 21. It is preferable, however, previously toloosen the brake-band adjustment to increase the effective diameter ofthe brake band. This is conveniently effected by rotating the usualadjusting wing nut 20. After insertion of the new lining, the externalbrake-band is tightened snugly by any convenient means, the purposebeing to hold the brake-lining firmly in place during the next stepwhich consists in securing the new lining to the brake-band. New rivets25 are then inserted in the usual holes provided in the externalbrake-band and are inwardly driven through the new lining 26 and,striking against the ring 21, are bent or deflected tightly to grip thenew lining and to secure the same to the external brake-band.Preferably, brass rivets of the split type shown in Figures and 6 areemployed. In Figure 5, there is shown a rivet 25 about to be driventhrough the usual hole 27 in the external brake-band 16 and through thenew lining 26 against the ring 21 whereby the split ends of the rivetare deflected in both directions as shown on the left in this figure.

The next step, after thus securing the new lining to the brake-band, isto remove the ring 21 from its operative position. This is convenientlydone by loosening the brake-band which had been preferably previouslytightened. The pin 24: may be employed in the manner above-mentioned tofacilitate removal of the anvil. The band is thus ready for replacementof the brake drum and wheel.

An advantageous form of anvil is shown in Figure 9 wherein there issuggested the employment of an arcuately shaped anvil 28 or, otherwiseconsidered a flat ring having an arcuate portion thereof cut away. Sucharcuate anvil may be operatively positioned so that the spaced endssubstam tially coincide with the spaced ends of the brake-bands. Theadvantage of this arouate anvil is that its effective diameter may bereadily varied.

To avoid the necessity, above-noted, of maintaining on hand at aservicestation or garage a set of different diameterecl rings, there may beprovided an adjustable ring or anvil. Such adjustable anvil 29 is shownin Figures 7 and 8 wherein is illustrated an elongated fiat metallicstrip shaped to provide a coiled anvil. This anvil is adapted to be heldat a selected diameter by means of clamps adapted retentively to holdthe two end-portions of the coil with relation to each other. Anysuitable clamp or small vise may be employed for this purpose. There ishere shown a fixed member com prising a U-shaped metallic jaw 31 havingan aperture in one portion to receive the binding screw 32 in threadedengagement therein. Rotation of the screw 32 by means of its knurledhead causes the end of the screw to clamp the interposed coils of theanvil against the under flange of the jaw 31.

Thus by the employment of this appara tus, the Work attendant uponrelining brakebands of motor vehicles is greatly decreased, principallythrough avoidance of the necessity of demounting and replacement of thebrake-bands themselves. These omitted steps are practically the mostexpensive due to the fact that in the majority of instances the brakemechanism parts are called with hardened mud and with grease and theconnections are rusted binding them tightly together.

I claim as my invention:

1. An apparatus for relining motor vehicle brake-bands of predeterminedwidths comprising a substantially annular anvil, the anvil being ofgreater width than the widest brake-band to be relined whereby a portionof the anvil may project beyond the brake-band when the anvil is inoperative position, said projecting anvil portion being provided with anaperture, and means adapted to be inserted in said aperture tofacilitate handling of the anvil.

2. An apparatus for relining motor vehicle brake-bands comprising anarcuately shaped anvil, the anvil being of such thickness as to permitthe anvil to be inserted in the position normally occupied by thebrakedrum and also being of greater width than the brake-band to berelined whereby a portion of the anvil may project beyond the brake-bandwhen the anvil is in operative position, and means to facilitatehandling of the anvil.

3. An apparatus for relining motor vehicle brake-bands comprising anarcuately shaped anvil, the anvil being of such thickness as to permitthe anvil to be inserted in the position normally occupied by thebrakedrum and also being of greater width than the brake-band to berelined whereby a portion of the anvil may project beyond the brake-bandwhen the anvil is in operative position, and means adapted demountablyto be secured to the anvil to facilitate handling thereof.

4. An apparatus for relining motor vehicle brake-bands comprising anarcuately shaped anvil, the anvil being of such thickness as to permitits insertion in the position normally occupied by the brakedrum andbeing of greater width than the brake-band to be relined whereby aportion of the anvil may project beyond the brake-band when the anvil isin operative position, and means on said projecting portion tofacilitate handling of the anvil.

5. An apparatus for relining motor vehicle brake-bands comprising anarcuately shaped anvil, the anvil being ofsuch thickness as to permitthe anvil to be inserted in the position normally occupied by thebrakedrum, said anvil having a portion of greater width than thebrake-band to be relined whereby said portion of the anvil may projectbeyond the brake-band when the anvil is in operative position, and meansto facilitate handling of the anvil.

In witness whereof, I have hereunto set my hand this 22nd day of August,1922.

ROBERT SARDESON.

